<?php
// +----------------------------------------------------------------------
// | 验证类
// +----------------------------------------------------------------------
// | Date: 2016-12-12
// +----------------------------------------------------------------------
// | Author: xiaobai
// +----------------------------------------------------------------------

namespace util;

class Verify
{
    /**
     * 验证手机号格式
     * @param null $mobile  手机号
     * @return bool
     */
    public function isMobile($mobile = null)
    {
        if (empty($mobile)) {
            return false;
        } if (!preg_match("/1[3456789]{1}\d{9}$/",$mobile)){
            return false;
        }
        return true;
    }

    /**
     * 验证邮箱
     * @param null $email   邮箱地址
     * @return bool
     */
    public function isEmail($email = null)
    {
        if (empty($email)) {
            return false;
        } if (!preg_match("/[a-z0-9]([a-z0-9]*[-_\.]?[a-z0-9]+)*@[a-z0-9]*([-_\.]?[a-z0-9]+)+[\.][a-z0-9]{2,3}([\.][a-z0-9]{2})?$/i",$email)) {
            return false;
        }
        return true;
    }

    /**
     * 验证字符串
     * @param null $str     字符串
     * @param int  $type    验证类型
     * @return bool
     */
    public function isString($str = null, $type = 1)
    {
        if (empty($str)) {
            return false;
        }
        //验证字母数字
        if ($type == 1) {
            if(preg_match("/^[a-zA-Z0-9\/\+]+$/",$str)){
                return true;
            }
        }
        return false;
    }

    /**
     * 验证身份证号
     * @param null $idcard  身份证号码
     * @return bool
     */
    public function checkIdCard($idcard = null)
    {
        if (empty($idcard)) {
            return false;
        }
        $City         = array(11 => "北京", 12 => "天津", 13 => "河北", 14 => "山西", 15 => "内蒙古", 21 => "辽宁", 22 => "吉林", 23 => "黑龙江", 31 => "上海", 32 => "江苏", 33 => "浙江", 34 => "安徽", 35 => "福建", 36 => "江西", 37 => "山东", 41 => "河南", 42 => "湖北", 43 => "湖南", 44 => "广东", 45 => "广西", 46 => "海南", 50 => "重庆", 51 => "四川", 52 => "贵州", 53 => "云南", 54 => "西藏", 61 => "陕西", 62 => "甘肃", 63 => "青海", 64 => "宁夏", 65 => "新疆", 71 => "台湾", 81 => "香港", 82 => "澳门", 91 => "国外");
        $iSum         = 0;
        $idCardLength = strlen($idcard);
        // 长度验证
        if (!preg_match('/^\d{17}(\d|x)$/i', $idcard) and !preg_match('/^\d{15}$/i', $idcard)) {
            return false;
        }
        // 地区验证
        if (!array_key_exists(intval(substr($idcard, 0, 2)), $City)) {
            return false;
        }
        // 15位身份证验证生日，转换为18位
        if ($idCardLength == 15) {
            $sBirthday = '19' . substr($idcard, 6, 2) . '-' . substr($idcard, 8, 2) . '-' . substr($idcard, 10, 2);
            //判断年月日的合法性
            if (checkdate(substr($idcard, 8, 2), substr($idcard, 10, 2), '19' . substr($idcard, 6, 2)) == false) {
                return false;
            }
            $d  = new \DateTime($sBirthday);
            $dd = $d->format('Y-m-d');
            if ($sBirthday != $dd) {
                return false;
            }
            $idcard = substr($idcard, 0, 6) . "19" . substr($idcard, 6, 9);//15to18
            $Bit18  = getVerifyBit($idcard);                               //算出第18位校验码
            $idcard = $idcard . $Bit18;
        }
        // 判断是否大于2078年，小于1900年
        $year = substr($idcard, 6, 4);
        if ($year < 1900 || $year > 2078) {
            return false;
        }
        //判断年月日的合法性
        if (checkdate(substr($idcard, 10, 2), substr($idcard, 12, 2), substr($idcard, 6, 4)) == false) {
            return false;
        }

        //18位身份证处理
        $sBirthday = substr($idcard, 6, 4) . '-' . substr($idcard, 10, 2) . '-' . substr($idcard, 12, 2);
        $d         = new \DateTime($sBirthday);
        $dd        = $d->format('Y-m-d');
        if ($sBirthday != $dd) {
            return false;
        }
        //身份证编码规范验证
        $idcard_base = substr($idcard, 0, 17);
        if (strtoupper(substr($idcard, 17, 1)) != $this->getVerifyBit($idcard_base)) {
            return false;
        }
        return true;
    }

    /**
     * 计算身份证校验码，根据国家标准GB 11643-1999
     * @param string $idcard_base   身份证号
     * @return bool|mixed
     */
    public function getVerifyBit($idcard_base = '')
    {
        if (strlen($idcard_base) != 17) {
            return false;
        }
        //加权因子
        $factor = array(7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2);
        //校验码对应值
        $verify_number_list = array('1', '0', 'X', '9', '8', '7', '6', '5', '4', '3', '2');
        $checksum           = 0;
        for ($i = 0; $i < strlen($idcard_base); $i++) {
            $checksum += substr($idcard_base, $i, 1) * $factor[$i];
        }
        $mod           = $checksum % 11;
        $verify_number = $verify_number_list[$mod];
        return $verify_number;
    }

    /**
     * 根据生日返回当前年龄
     * @param null $birthday    生日，格式Y-m-d
     * @return bool|false|int
     */
    public function birthday($birthday = null)
    {
        $age = strtotime($birthday);
        if ($age === false) {
            return false;
        }
        list($y1, $m1, $d1) = explode("-", date("Y-m-d", $age));
        $now = strtotime("now");
        list($y2, $m2, $d2) = explode("-", date("Y-m-d", $now));
        $age = $y2 - $y1;
        if ((int)($m2 . $d2) < (int)($m1 . $d1)) {
            $age -= 1;
        }
        return $age; 
    }

    /**
     * 是否是手机端
     * @return bool
     */
    static public function isMobileClient()
    {
        // 如果有HTTP_X_WAP_PROFILE则一定是移动设备
        if (isset($_SERVER['HTTP_X_WAP_PROFILE'])) {
            return true;
        }
        // 如果via信息含有wap则一定是移动设备,部分服务商会屏蔽该信息
        if (isset($_SERVER['HTTP_VIA'])) {
            // 找不到为flase,否则为true
            return stristr($_SERVER['HTTP_VIA'], "wap") ? true : false;
        }
        // 脑残法，判断手机发送的客户端标志,兼容性有待提高。其中'MicroMessenger'是电脑微信
        if (isset($_SERVER['HTTP_USER_AGENT'])) {
            $clientkeywords = array('nokia', 'sony', 'ericsson', 'mot', 'samsung', 'htc', 'sgh', 'lg', 'sharp', 'sie-', 'philips', 'panasonic', 'alcatel', 'lenovo', 'iphone', 'ipod', 'blackberry', 'meizu', 'android', 'netfront', 'symbian', 'ucweb', 'windowsce', 'palm', 'operamini', 'operamobi', 'openwave', 'nexusone', 'cldc', 'midp', 'wap', 'mobile', 'MicroMessenger');
            // 从HTTP_USER_AGENT中查找手机浏览器的关键字
            if (preg_match("/(" . implode('|', $clientkeywords) . ")/i", strtolower($_SERVER['HTTP_USER_AGENT']))) {
                return true;
            }
        }
        // 协议法，因为有可能不准确，放到最后判断
        if (isset ($_SERVER['HTTP_ACCEPT'])) {
            // 如果只支持wml并且不支持html那一定是移动设备
            // 如果支持wml和html但是wml在html之前则是移动设备
            if ((strpos($_SERVER['HTTP_ACCEPT'], 'vnd.wap.wml') !== false) && (strpos($_SERVER['HTTP_ACCEPT'], 'text/html') === false || (strpos($_SERVER['HTTP_ACCEPT'], 'vnd.wap.wml') < strpos($_SERVER['HTTP_ACCEPT'], 'text/html')))) {
                return true;
            }
        }
        return false;
    }

}